GB1581380A - Process for the preparation of anhydrous metal chlorides from spent catalysts - Google Patents
Process for the preparation of anhydrous metal chlorides from spent catalysts Download PDFInfo
- Publication number
- GB1581380A GB1581380A GB53961/77A GB5396177A GB1581380A GB 1581380 A GB1581380 A GB 1581380A GB 53961/77 A GB53961/77 A GB 53961/77A GB 5396177 A GB5396177 A GB 5396177A GB 1581380 A GB1581380 A GB 1581380A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chloride
- process according
- chlorides
- catalyst
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000003054 catalyst Substances 0.000 title claims description 55
- 238000000034 method Methods 0.000 title claims description 37
- 229910001510 metal chloride Inorganic materials 0.000 title claims description 8
- 238000002360 preparation method Methods 0.000 title claims description 7
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 26
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 24
- 150000002430 hydrocarbons Chemical class 0.000 claims description 22
- 229930195733 hydrocarbon Natural products 0.000 claims description 21
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 16
- 229910052720 vanadium Inorganic materials 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 150000001805 chlorine compounds Chemical class 0.000 claims description 11
- 239000008246 gaseous mixture Substances 0.000 claims description 11
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 239000011780 sodium chloride Substances 0.000 claims description 8
- 238000005660 chlorination reaction Methods 0.000 claims description 7
- 229910017052 cobalt Inorganic materials 0.000 claims description 7
- 239000010941 cobalt Substances 0.000 claims description 7
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 7
- PDKHNCYLMVRIFV-UHFFFAOYSA-H molybdenum;hexachloride Chemical compound [Cl-].[Cl-].[Cl-].[Cl-].[Cl-].[Cl-].[Mo] PDKHNCYLMVRIFV-UHFFFAOYSA-H 0.000 claims description 7
- RPESBQCJGHJMTK-UHFFFAOYSA-I pentachlorovanadium Chemical compound [Cl-].[Cl-].[Cl-].[Cl-].[Cl-].[V+5] RPESBQCJGHJMTK-UHFFFAOYSA-I 0.000 claims description 7
- 239000004411 aluminium Substances 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 239000001103 potassium chloride Substances 0.000 claims description 6
- 235000011164 potassium chloride Nutrition 0.000 claims description 6
- 230000000717 retained effect Effects 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- 229910021550 Vanadium Chloride Inorganic materials 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 4
- 229910021552 Vanadium(IV) chloride Inorganic materials 0.000 claims description 4
- OYMJNIHGVDEDFX-UHFFFAOYSA-J molybdenum tetrachloride Chemical class Cl[Mo](Cl)(Cl)Cl OYMJNIHGVDEDFX-UHFFFAOYSA-J 0.000 claims description 4
- JTJFQBNJBPPZRI-UHFFFAOYSA-J vanadium tetrachloride Chemical compound Cl[V](Cl)(Cl)Cl JTJFQBNJBPPZRI-UHFFFAOYSA-J 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 235000019270 ammonium chloride Nutrition 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical class Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 claims description 2
- LSGOVYNHVSXFFJ-UHFFFAOYSA-N vanadate(3-) Chemical compound [O-][V]([O-])([O-])=O LSGOVYNHVSXFFJ-UHFFFAOYSA-N 0.000 claims description 2
- 241000605281 Anaplasma phagocytophilum Species 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 229910052750 molybdenum Inorganic materials 0.000 description 18
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 15
- 239000011733 molybdenum Substances 0.000 description 15
- 150000001875 compounds Chemical class 0.000 description 14
- 229910052759 nickel Inorganic materials 0.000 description 13
- 239000000460 chlorine Substances 0.000 description 10
- 238000011282 treatment Methods 0.000 description 10
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 8
- 229910052801 chlorine Inorganic materials 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 150000002739 metals Chemical class 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- FWMUJAIKEJWSSY-UHFFFAOYSA-N sulfur dichloride Chemical compound ClSCl FWMUJAIKEJWSSY-UHFFFAOYSA-N 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical class [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007792 gaseous phase Substances 0.000 description 2
- 150000004677 hydrates Chemical class 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004517 catalytic hydrocracking Methods 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 239000005078 molybdenum compound Substances 0.000 description 1
- 150000002752 molybdenum compounds Chemical class 0.000 description 1
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 1
- VLAPMBHFAWRUQP-UHFFFAOYSA-L molybdic acid Chemical compound O[Mo](O)(=O)=O VLAPMBHFAWRUQP-UHFFFAOYSA-L 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000005049 silicon tetrachloride Substances 0.000 description 1
- 239000011684 sodium molybdate Substances 0.000 description 1
- 235000015393 sodium molybdate Nutrition 0.000 description 1
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- -1 vanadium chlorides Sulphur chloride Chemical class 0.000 description 1
- 150000003682 vanadium compounds Chemical class 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G53/00—Compounds of nickel
- C01G53/08—Halides; Oxyhalides
- C01G53/09—Chlorides; Oxychlorides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G1/00—Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, or C01F, in general
- C01G1/06—Halides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G31/00—Compounds of vanadium
- C01G31/04—Halides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G39/00—Compounds of molybdenum
- C01G39/04—Halides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G51/00—Compounds of cobalt
- C01G51/08—Halides; Oxyhalides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7639842A FR2376076A1 (fr) | 1976-12-30 | 1976-12-30 | Procede de preparation de chlorures metalliques anhydres a partir de catalyseurs uses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1581380A true GB1581380A (en) | 1980-12-10 |
Family
ID=9181877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB53961/77A Expired GB1581380A (en) | 1976-12-30 | 1977-12-28 | Process for the preparation of anhydrous metal chlorides from spent catalysts |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4182747A (enrdf_load_stackoverflow) |
| JP (1) | JPS5415498A (enrdf_load_stackoverflow) |
| DE (1) | DE2758498C3 (enrdf_load_stackoverflow) |
| FR (1) | FR2376076A1 (enrdf_load_stackoverflow) |
| GB (1) | GB1581380A (enrdf_load_stackoverflow) |
| IT (1) | IT1088943B (enrdf_load_stackoverflow) |
| NL (1) | NL7714495A (enrdf_load_stackoverflow) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2453904A1 (fr) * | 1979-04-09 | 1980-11-07 | Europ Derives Manganese | Procede de recuperation de metaux a partir de catalyseurs d'hydrodesulfuration d'hydrocarbures |
| US4257914A (en) * | 1979-12-10 | 1981-03-24 | Conoco, Inc. | Method for the regeneration of spent molten zinc chloride |
| US4350609A (en) * | 1981-02-26 | 1982-09-21 | Gulf Research & Development Company | Process for producing a catalyst by depositing molybdenum removed from a waste catalyst |
| US4459274A (en) * | 1982-10-25 | 1984-07-10 | Atlantic Richfield Company | Chlorination using partially calcined carbonaceous material as a reductant |
| US4529717A (en) * | 1982-10-25 | 1985-07-16 | Atlantic Richfield Company | Partially calcined carbonaceous material as a reductant |
| US4487747A (en) * | 1983-05-05 | 1984-12-11 | Laporte Industries Limited | Production of metal chlorides |
| US4652434A (en) * | 1985-08-05 | 1987-03-24 | Scm Corporation | Chlorination of ores containing alkali or alkaline earth values |
| JPH01189348A (ja) * | 1988-01-22 | 1989-07-28 | Agency Of Ind Science & Technol | 触媒活性成分及び担体の廃触媒からの回収方法 |
| DE60215705D1 (de) * | 2002-03-21 | 2006-12-07 | Council Scient Ind Res | Verfahren zur wiedergewinnung von nickel aus verbrauchten katalysatoren |
| FR2920424B1 (fr) * | 2007-09-04 | 2010-03-12 | Commissariat Energie Atomique | Procede de conversion de chlorures de metaux alcalino-terreux en tungstates et molybdates et ses applications. |
| JP5396954B2 (ja) * | 2008-03-24 | 2014-01-22 | 三菱マテリアル株式会社 | クロロシランの精製装置及びクロロシラン製造方法 |
| US8287618B2 (en) | 2010-11-10 | 2012-10-16 | Kuwait Institute For Scientific Research | Method or process for recovering Mo, V, Ni, Co and Al from spent catalysts using ultrasonic assisted leaching with EDTA |
| US11932553B2 (en) * | 2018-12-17 | 2024-03-19 | Versum Materials Us, Llc | Ultra-high purity tungsten chlorides |
| CN112708773B (zh) * | 2020-12-23 | 2023-04-07 | 青岛惠城环保科技集团股份有限公司 | 石油焦制氢灰渣的处理方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1911505A (en) * | 1933-05-30 | Recovery op molybdenum and similar | ||
| US3066010A (en) * | 1959-04-13 | 1962-11-27 | Stauffer Chemical Co | Purification of metal chlorides |
| US3180706A (en) * | 1961-05-25 | 1965-04-27 | Sinclair Research Inc | Method for the recovery of metal values from a spent hydrocarbon conversion catalyst |
| US3197284A (en) * | 1961-08-04 | 1965-07-27 | Universal Oil Prod Co | Fluidized catalytic hydrogen production |
| US3172864A (en) * | 1961-09-21 | 1965-03-09 | Activation of deactivatex hydro- benitkimcation catalysts | |
| US3539290A (en) * | 1967-12-06 | 1970-11-10 | Sinclair Research Inc | Recovery of metals from used hydrocarbon conversion catalysts |
| US3565820A (en) * | 1969-06-19 | 1971-02-23 | Texaco Inc | Regeneration of catalysts used in residual oil hydroprocessing |
| US3985639A (en) * | 1974-07-19 | 1976-10-12 | Texaco Inc. | Catalytic cracking process |
-
1976
- 1976-12-30 FR FR7639842A patent/FR2376076A1/fr active Granted
-
1977
- 1977-12-20 US US05/862,594 patent/US4182747A/en not_active Expired - Lifetime
- 1977-12-27 JP JP15852577A patent/JPS5415498A/ja active Granted
- 1977-12-27 IT IT31286/77A patent/IT1088943B/it active
- 1977-12-28 GB GB53961/77A patent/GB1581380A/en not_active Expired
- 1977-12-28 DE DE2758498A patent/DE2758498C3/de not_active Expired
- 1977-12-28 NL NL7714495A patent/NL7714495A/xx not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| US4182747A (en) | 1980-01-08 |
| IT1088943B (it) | 1985-06-10 |
| DE2758498A1 (de) | 1978-07-06 |
| FR2376076A1 (fr) | 1978-07-28 |
| JPS565691B2 (enrdf_load_stackoverflow) | 1981-02-06 |
| NL7714495A (nl) | 1978-07-04 |
| DE2758498C3 (de) | 1980-02-21 |
| FR2376076B1 (enrdf_load_stackoverflow) | 1981-11-13 |
| JPS5415498A (en) | 1979-02-05 |
| DE2758498B2 (de) | 1979-06-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |